All 141 actors in both Fringe and The X-Files
141 actors have appeared in both Fringe and The X-Files, across 318 episodes. The most-credited is Michael Kopsa, Captain Windmark in Fringe and Rick Culver in The X-Files.
| Actor | In Fringe | In The X-Files | Eps | Eps |
|---|---|---|---|---|
| Michael Kopsa | Captain Windmark | Rick Culver | 11 | 1 |
| Brendan Beiser | Steve | Agent Sean Pendrell | 1 | 10 |
| Gerard Plunkett | Senator James Van Horn | Dr. Calderon | 4 | 2 |
| Roger Cross | Smith | Field Agent, Officer Wentworth, Private Kittel | 2 | 4 |
| Timothy Webber | Man | Detective Talbot, Dr. Paul Farraday, Jess Harold | 2 | 3 |
| Karin Konoval | Dr. Christine Albright | Little Chucky Poundstone, Little Judy Poundstone, Madame Zelma | 1 | 3 |
| Michael Rogers | Mueller | Crewman #1, Lt. Griffin | 5 | 2 |
| Hrothgar Mathews | Observer #1 | Creighton Jones, Galen Muntz, Jack | 1 | 4 |
| Arye Gross | Malcolm Truss | Dr. Puvogel | 1 | 1 |
| Glynis Davies | Landlady | Ellen, Monica Landis, Nelson | 1 | 3 |
| Rowan Longworth | Michael | William (15 yr old) | 6 | 1 |
| Chris Shields | Special Agent Fisher, Special Agent Fisher (Alt Universe) | Detective Dross | 4 | 1 |
| Blu Mankuma | Stephen Farnsworth | Claude Peterson, Det. Pennock | 1 | 2 |
| Sarah Jane Redmond | Miss Ashley | Karin Matthews, Young Mother | 1 | 2 |
| Sean Campbell | Zach Alpert | Local Cop, Officer Sean | 1 | 2 |
| Brent Stait | Lieutenant Daniels | Timothy Mayhew, Corp. Taylor | 1 | 3 |
| Gabrielle Rose | Dr. Anderson, Dr. Anderson (Alt Universe) | Dr. Zenzola, Mrs. Anita Budahas | 2 | 2 |
| John Pyper-Ferguson | John McClennan, John McClennan (Alt Universe) | Det. John Kresge, Paul | 1 | 3 |
| Chilton Crane | Lincoln's Mother (Alt Universe) | Sharon Graffia, Margaret Hohman, Mother at Bus Station | 1 | 4 |
| Forbes Angus | Science Director | Funeral Director, Government Scientist, M.D. | 1 | 4 |
| Megan Leitch | Elaine | Samantha Mulder | 1 | 4 |
| Peter Kelamis | Tobin | Assistant D.A. Daniel Costa, Husband #2, Lieutenant Foyle | 1 | 4 |
| Malcolm Stewart | Dr. Levin | Dr. Sacks, Agent Bonnecaze, Commander Carver | 1 | 5 |
| Stefan Arngrim | Store Owner | Prisoner | 4 | 2 |
| Andrew Airlie | Dr. James Carson | Attorney, Rob | 1 | 2 |
| Ben Cotton | Impound Clerk | Mr. Paulsen | 1 | 2 |
| Colleen Winton | Woman | Lie Detector Technician, Therapist | 1 | 2 |
| Hiro Kanagawa | Executor | Dr. Yonechi, Garner, Peter Tanaka | 1 | 3 |
| John Savage | Andre Hughes | Henry Trondheim | 1 | 1 |
| Ken Camroux-Taylor | Old Senator | Senior Agent #2 | 1 | 5 |
| Kevin Weisman | Joseph "Gemini" Feller | Anson Stokes | 1 | 1 |
| Laara Sadiq | Carol Bryce | Female E.M.T. | 1 | 1 |
| Michael O'Neill | Sheriff Paul Velchik | Patrol Captain | 1 | 1 |
| Nestor Serrano | Colonel Henry Jacobson | Ken Naciamento | 1 | 1 |
| Stephen McHattie | Colonel Raymond Gordon | Red-Haired Man | 1 | 2 |
| Veena Sood | HR Head | Dr. Louise Colquitt, Mrs. Saunders | 1 | 2 |
| Zak Santiago | Cecil | Mr. Green | 1 | 2 |
| David Lewis | Brian Bauer | Vosberg, Young Agent, Young Officer | 1 | 3 |
| BJ Harrison | Nurse 2 | Clerk, Hannah | 1 | 2 |
| Gardiner Millar | Observer #2 | Eugene Baiocchi, Man in Suit | 1 | 2 |
| Kenneth Tigar | Warden Johann Lennox | Dr. Plant | 2 | 1 |
| Kerry Sandomirsky | Nun | Joanne Steffen, Tracey | 1 | 2 |
| Miguelito Macario | Agent #1, Tech | Tattooed Prisoner | 2 | 1 |
| Tegan Moss | Rebecca Kibner | Dana Scully | 1 | 2 |
| Viv Leacock | Cop, Police Officer | Price | 2 | 1 |
| April Grace | NYPD Detective | Danielle Manley | 1 | 1 |
| Ben Wilkinson | Jeremy Roman | Dean Cavalier | 1 | 1 |
| Brad Dourif | Moreau | Luther Lee Boggs | 1 | 1 |
| Candus Churchill | Dead Singer / Corpse #3 | Shirley | 1 | 1 |
| Charles André | Older Gentleman | Detainee, Ozzy "Banjo" Krager, Ray Floyd | 1 | 3 |
| John Aylward | Dr. Owen Frank | Dr. John Rietz | 1 | 1 |
| John Prosky | Captive Observer | Medical Examiner | 1 | 1 |
| Kacey Rohl | Madeline Stanfield | Agnes | 1 | 1 |
| Ken Kramer | Mr. Rubel | Dr. Alexander Ivanov, Dr. Browning, Dr. Terrance Allen Berube | 1 | 3 |
| Michael Massee | Anson Carr | Vernon Ephesian | 1 | 1 |
| Sharon Taylor | Broyles' Secretary | Diana Eggers | 1 | 1 |
| Ted Cole | Scientist Observer | 2nd Paramedic | 2 | 1 |
| Tom Butler | Richard | Benjamin Drake, CIA Agent Ambrose Chapel | 1 | 2 |
| Steve Makaj | Loyalist Commander | Scott Ostelhoff, Frank Kiveat, Patrolman | 1 | 4 |
| Alessandro Juliani | Marco | Joseph Cutler | 1 | 1 |
| Andy Thompson | Observer, Pilot | Customs Agent | 2 | 1 |
| Anthony Harrison | BPD Sergeant | 4th Man, Agent Riggins | 1 | 2 |
| Brent Chapman | TSA Agent | Security Cop, Traffic Cop | 1 | 2 |
| C. Ernst Harth | Bus Driver | Huge Man | 1 | 1 |
| Charles Martin Smith | Sheriff C. Howard Golightly | Dr. Osbourne | 1 | 1 |
| Ian Robison | George | Detective Smith, Ranger | 1 | 2 |
| Jonathan Lloyd Walker | Albert Duncan | Chuck Lukerman | 1 | 1 |
| Lossen Chambers | Cashier | Nurse Peggy Easton | 1 | 1 |
| Marci T House | Pam | Angry Woman | 1 | 1 |
| Marcus Giamatti | Ray Duffy | John Gillnitz | 1 | 1 |
| Mark Acheson | Murray Harkins | Ted Bertram, Trucker | 1 | 2 |
| Paul McGillion | Edwin Massey | Fred Neiman | 1 | 1 |
| Peter Bryant | Ben McCalister | Uniformed Cop | 1 | 1 |
| Alvin Sanders | Doorman | Bus Driver, Deputy Wright | 1 | 2 |
| Patrick Keating | Manager | Beggar, Donald Gelman | 1 | 2 |
| Paul Jarrett | Dr. Warren Blake | James Earl Ray, Upshaw | 1 | 2 |
| Roger Haskett | Dr. Harris | Coroner, Deputy Tyson | 1 | 2 |
| Anja Savcic | Amanda Walsh | Girl | 1 | 1 |
| Catherine Lough Haggquist | Lucy | Dr. Richmond | 1 | 1 |
| Daryl Shuttleworth | Lincoln's Father (Alt Universe) | Daryl Landry | 1 | 1 |
| Dean McKenzie | Rob | Army Tech | 1 | 1 |
| Dejan Loyola | Klopinski | Agent Colquitt | 1 | 1 |
| Giacomo Baessato | Guard | Doctor | 1 | 1 |
| John Tench | Patrick Hickey | Steve | 1 | 1 |
| Ken Kirzinger | Air Marshal | Richter | 1 | 1 |
| Nancy J. Lilley | CSI Tech | Liposuction Patient | 1 | 1 |
| Omari Newton | Security Guard | Rogers | 1 | 1 |
| Ryan Hesp | Butterfly Observer | Henchman #1 | 1 | 1 |
| Tom Pickett | Dead Singer / Corpse #1 | Cop | 1 | 1 |
| Donna Yamamoto | Deborah Crampton | Female Agent, Night Nurse | 1 | 2 |
| Ken Roberts | Landlord | Clerk, Proprietor | 1 | 2 |
| Colin Lawrence | FBI Agent Roach | Cop #1 | 1 | 1 |
| Genevieve Buechner | Tabatha | Kayla | 1 | 1 |
| Julian D. Christopher | General Tonks | Dr. Oscar Griffiths | 1 | 1 |
| Lori Ann Triolo | Karen Truss | Diane | 1 | 1 |
| Paul Moniz de Sa | Niemann | Clinician #2 | 1 | 1 |
| Peter Hanlon | Doctor #1 | Aide, Dr. Bailey | 1 | 2 |
| Stephen Dimopoulos | Mr. Lamia | Detective, Ionesco | 1 | 2 |
| Troy Anthony Young | Loyalist Guard #1 | Mr. Van De Kamp | 1 | 1 |
| Michael Ryan | Gary | Agent Cameron Hill, Overcoat Man | 1 | 2 |
| Christopher Logan | Hotel Manager | Dr. Sanjay | 1 | 1 |
| Craig March | Co-Worker | Detective Gordon | 1 | 1 |
| Elizabeth McCarthy | Cleaning Lady | Shopper | 1 | 1 |
| Eric Keenleyside | Jeremy Bissell | Lance Kernof | 1 | 1 |
| Janet Kidder | Doctor Brody | Nurse | 1 | 1 |
| Kwesi Ameyaw | Agent Frug | Judge | 1 | 1 |
| Pamela Diaz | Morgue Worker #1 | Maria Dorantes | 1 | 1 |
| Peter Flemming | Loyalist Lieutenant | Officer #1 | 1 | 1 |
| Stephen Lobo | FBI Agent Frazier | Dark-Suited Man #1 | 1 | 1 |
| Terrance Leigh | Half Egg Face Loyalist | Snorkel Dude | 1 | 1 |
| Brian Knox McGugan | Waiter | Officer #1 | 1 | 1 |
| Jase Anthony Griffith | Museum Security Guard | Paramedic #1 | 1 | 1 |
| Jason Diablo | Detective | Angry Man | 1 | 1 |
| Kurt Evans | Co-Pilot | Sports Store Employee | 1 | 1 |
| Mike Mitchell | George Reed | Uniformed Cop #1 | 1 | 1 |
| Patti Allan | Landlady | Mrs. Kernof | 1 | 1 |
| Peter Hall | Shop Proprietor | Dr. Matthew Wegweiser | 1 | 1 |
| D. Neil Mark | ND Agent #2 | Deputy Scott Kerber, SWAT Team Officer | 1 | 2 |
| Aurelio DiNunzio | Business Man | Detective | 1 | 1 |
| Darren Dolynski | Mark Wilner | Man in Suit | 1 | 1 |
| Judith Maxie | Hospital Administrator | Barbara Taylor | 1 | 1 |
| Kathryn Kirkpatrick | Nurse Sheila | Receptionist | 1 | 1 |
| Kurt Max Runte | Donald Kellen | Ranger | 1 | 1 |
| Philip Cabrita | Clerk | Townsperson #1 | 1 | 1 |
| Alison Wandzura | Olivia Body Double | Cynthia | 2 | 1 |
| Dan Shea | Observer #3 on Street | Deputy | 1 | 1 |
| David Bloom | Neo Observer | Stress Man | 1 | 1 |
| David Neale | Police Captain | Navy Base Guard | 1 | 1 |
| Gary Sekhon | MD Tech | Forensic Tech | 1 | 1 |
| John R. Taylor | Winston | Husband | 1 | 1 |
| Sunita Prasad | Waitress | Dr. Aliyeh Scholtz | 1 | 1 |
| Robin Douglas | Lynn Arrendt | Computer Tekkie | 1 | 1 |
| Sachin Sahel | Snack Shop Clerk | Jack Budd | 1 | 1 |
| Diana Ha | Fae | Dr. Wu | 1 | 1 |
| Cam Cronin | Tech #1 | Paramedic | 1 | 1 |
| Jeremy Jones | Paramedic | Sergeant | 1 | 1 |
| Shaine Jones | Tactical Agent Spencer | Dark-Suited Man #2 | 1 | 1 |
| Simon Chin | Chinese Vendor | Janitor #2 | 1 | 1 |
| Henry Mah | Nurse | Night Manager | 1 | 1 |
| Sam Bob | Homeless Man with Dog | Homeless #2 | 1 | 1 |
| Todd Mann | Alt. MP #1 | FBI Agent #2 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.